* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --accent-gradient: linear-gradient(135deg, #ff6b6b, #ff8e8e);
  --shadow-sm: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-md: 0 10px 40px rgba(0,0,0,0.12);
  --shadow-lg: 0 25px 80px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: #1e293b;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navbar - Optimized */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  z-index: 1000;
  padding: 0.5rem 0;
  transition: var(--transition);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.98);
  padding: 0.25rem 0;
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 60px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

.nav-brand h3 {
  font-size: 1.4rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}

.nav-center {
  flex: 1;
  max-width: 600px;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}

.dual-search {
  display: flex;
  width: 100%;
  max-width: 600px;
  gap: 0.5rem;
  position: relative;
}

.search-group {
  position: relative;
  flex: 1;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #94a3b8;
  font-size: 1rem;
  z-index: 2;
  pointer-events: none;
}

#search-courses, #search-location {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  border: 2px solid #e2e8f0;
  border-radius: 25px;
  font-size: 0.9rem;
  background: white;
  outline: none;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

#search-courses:focus, #search-location:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102,126,234,0.1);
}

.navbar-search-icon {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #667eea;
  font-size: 1rem;
  background: white;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  z-index: 3;
  box-shadow: var(--shadow-sm);
}

.navbar-search-icon:hover {
  background: #667eea;
  color: white;
  transform: translateY(-50%) scale(1.1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-shrink: 0;
}

.nav-link {
  text-decoration: none;
  color: #1e293b;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link:hover, .nav-link.active {
  color: #667eea;
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  min-width: 160px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  border: 1px solid #e2e8f0;
  list-style: none;
  padding: 0.5rem 0;
  margin: 0.5rem 0 0;
  z-index: 1001;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 0.75rem 1.25rem;
  color: #374151;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.dropdown-menu a:hover {
  background: #f8fafc;
  color: #667eea;
  padding-left: 1.5rem;
}

.login-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #1e293b;
  font-size: 1.3rem;
  transition: var(--transition);
  text-decoration: none;
}

.login-icon:hover {
  background: rgba(102,126,234,0.1);
  transform: scale(1.1);
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 3px;
  padding: 4px;
}

.hamburger span {
  width: 20px;
  height: 2px;
  background: #1e293b;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Slider */
.hero-slider {
  position: relative;
  width: 100vw;
  height: 70vh;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  overflow: hidden;
}

.slider-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.8s ease-in-out;
}

.slide.active {
  opacity: 1;
}

.slide-content {
  position: absolute;
  bottom: 10vh;
  left: 5%;
  color: white;
  max-width: 600px;
  background: rgba(0,0,0,0.4);
  padding: 2rem;
  border-radius: 16px;
  backdrop-filter: blur(10px);
}

.slide-content h2 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.slide-content p {
  font-size: 1.25rem;
  opacity: 0.95;
  text-shadow: 0 1px 5px rgba(0,0,0,0.5);
}

.slider-dots {
  position: absolute;
  bottom: 5vh;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  z-index: 10;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all 0.3s ease;
}

.dot.active, .dot:hover {
  background: white;
  transform: scale(1.2);
}

.slider-nav {
  position: absolute;
  top: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  padding: 0 2rem;
  pointer-events: none;
  z-index: 10;
}

.slider-arrow {
  background: rgba(255,255,255,0.3);
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  pointer-events: all;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.slider-arrow:hover {
  background: rgba(255,255,255,0.5);
  transform: scale(1.1);
}

/* Sliders */
.category-slider, .benefits-slider {
  padding: 5rem 0;
}

.category-slider {
  background: #f8fafc;
}

.category-slider-container, .benefits-slider-container {
  position: relative;
  width: 100vw;
  height: 350px;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.benefits-slider-container {
  height: 450px;
}

.category-slides-track, .benefits-slides-track {
  display: flex;
  gap: 2rem;
  transition: transform 0.8s cubic-bezier(0.25,0.46,0.45,0.94);
  height: 100%;
  padding: 0 4rem;
  will-change: transform;
}

.category-slide, .benefit-slide {
  flex-shrink: 0;
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.category-slide {
  height: 350px;
  background-size: cover;
  background-position: center;
  border-radius: 24px;
  position: relative;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.category-slide:hover {
  transform: scale(1.02);
}

.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 60%, rgba(0,0,0,0.8));
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  border-radius: 24px;
}

.category-overlay h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: white;
  margin: 0;
  text-shadow: 0 1px 5px rgba(0,0,0,0.8);
}

.benefit-card {
  background: white;
  height: 100%;
  padding: 2.5rem 2rem;
  border-radius: 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.8);
}

.benefit-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.benefit-icon {
  width: 80px;
  height: 80px;
  background: var(--primary-gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.benefit-icon i {
  font-size: 2rem;
  color: white;
}

.benefit-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #1e293b;
}

.benefit-card p {
  color: #64748b;
  font-size: 1rem;
}

/* Slider Arrows */
.cat-prev, .cat-next, .benefit-prev, .benefit-next {
  position: absolute;
  top: 50%;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(255,255,255,0.3);
  color: white;
  font-size: 1.4rem;
  cursor: pointer;
  transition: var(--transition);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transform: translateY(-50%);
}

.cat-prev:hover, .cat-next:hover, .benefit-prev:hover, .benefit-next:hover {
  background: rgba(255,255,255,0.4);
  box-shadow: var(--shadow-lg);
  transform: translateY(-50%) scale(1.15);
}

.cat-prev { left: 2rem; }
.cat-next { right: 2rem; }
.benefit-prev { left: 2rem; }
.benefit-next { right: 2rem; }

/* Sections */
.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
  color: #1e293b;
}

.trust {
  padding: 5rem 0;
  background: #f8fafc;
}

.trust-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.logo {
  height: 50px;
  filter: grayscale(100%) opacity(0.7);
  transition: var(--transition);
}

.logo:hover {
  filter: grayscale(0) opacity(1);
  transform: scale(1.1);
}

.image-content-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.image-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.image-content-image img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.image-content-image:hover img {
  transform: scale(1.02);
}

.image-content-text {
  padding-right: 2rem;
}

.image-content-text h2 {
  margin-bottom: 1.5rem;
  text-align: left;
}

.image-content-text p {
  color: #64748b;
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

.courses {
  padding: 6rem 0;
  background: #f8fafc;
}

.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.course-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

.course-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.course-image {
  height: 200px;
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
}

.course-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  transition: opacity 0.3s ease;
}

.course-card:hover .course-image::after {
  opacity: 0;
}

.course-image i {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  color: white;
  z-index: 2;
}

.course-content {
  padding: 2rem;
}

.course-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #1e293b;
}

.course-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ff6b6b;
}

.cta {
  padding: 6rem 0;
  background: var(--primary-gradient);
  text-align: center;
  color: white;
}

.cta h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.cta p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
}

.footer {
  background: #1e293b;
  color: white;
  text-align: center;
  padding: 2rem 0;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 12px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-large {
  padding: 1.25rem 3rem;
  font-size: 1.125rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 1024px) {
  .nav-center { max-width: 400px; }
}

@media (max-width: 768px) {
  .hamburger { display: flex !important; }
  .nav-left, .nav-right { gap: 1rem; }
  .dual-search { flex-direction: column; gap: 0.5rem; }
  .image-content-grid { grid-template-columns: 1fr; gap: 2rem; text-align: center; }
  .image-content-image img { height: 300px; }
  .image-content-text { padding-right: 0; order: -1; }
  .course-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 480px) {
  .nav-brand h3 { font-size: 1.2rem; }
  .container { padding: 0 15px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 300px; }
}